import unittest
import user_code
import importlib
import time

class TestTask(unittest.TestCase):
    def setUp(self):
        importlib.reload(user_code)

    def test_exactly_10_hoodies_sold(self):
        import user_code
        # Reset state
        user_code.hoodies_in_stock = 10
        user_code.dropped_customers.clear()
        user_code.run_surprise_drop()
        actual_stock = getattr(user_code, 'hoodies_in_stock', None)
        actual_customers = getattr(user_code, 'dropped_customers', None)
        _dynamic_test(
            self,
            isinstance(actual_stock, int) and actual_stock == 0,
            "All hoodies sold, stock is zero.",
            f"Expected hoodies_in_stock to be 0, got {actual_stock}.",
        )
        _dynamic_test(
            self,
            isinstance(actual_customers, list) and len(actual_customers) == 10,
            "Exactly 10 customers succeeded in buying.",
            f"Expected 10 customers to buy, got {len(actual_customers)}: {actual_customers}",
        )

    def test_no_extra_hoodies_sold(self):
        import user_code
        user_code.hoodies_in_stock = 10
        user_code.dropped_customers.clear()
        user_code.run_surprise_drop()
        actual_customers = getattr(user_code, 'dropped_customers', None)
        unique_customers = set(actual_customers)
        _dynamic_test(
            self,
            len(unique_customers) == 10,
            "No duplicate customer IDs in dropped_customers.",
            f"Duplicate customer IDs found: {actual_customers}",
        )

    def test_stock_never_negative(self):
        import user_code
        user_code.hoodies_in_stock = 10
        user_code.dropped_customers.clear()
        user_code.run_surprise_drop()
        actual_stock = getattr(user_code, 'hoodies_in_stock', None)
        _dynamic_test(
            self,
            actual_stock >= 0,
            "Stock never goes negative.",
            f"Stock went negative: {actual_stock}",
        )

def _dynamic_test(test_case, condition, success_message, failure_message):
    if condition:
        test_case._testMethodName = success_message
        test_case.assertTrue(True, success_message)
    else:
        test_case._testMethodName = failure_message
        test_case.fail(failure_message)


test_main.py

Je verwerft praktische vaardigheden in het gebruik van Python-modules en imports voor efficiënt codebeheer. Beheers geavanceerde foutafhandelings­technieken voor betrouwbaardere applicaties, automatiseer bestandsbewerkingen met bestandsafhandeling en leer robuuste teststrategieën met Pytest en Unittest om de integriteit van je code te waarborgen.

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